// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// This module is browser compatible.

import { isWindows } from "./_os.ts";
import { extname as posixExtname } from "./posix/extname.ts";
import { extname as windowsExtname } from "./windows/extname.ts";
/**
 * Return the extension of the `path` with leading period.
 * @param path with extension
 * @returns extension (ex. for `file.ts` returns `.ts`)
 */
export function extname(path: string): string {
  return isWindows ? windowsExtname(path) : posixExtname(path);
}